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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0169e24905760c05a20b5f55ace52932466efa0e90aaf35689e0eec195297e9e' 
  AND token = '/ai6SxQ8lcC2Q7xia/bfmQ7F2fBO22gUc3fLEq28Gfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}