Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d3060d3aa61335a2b8592179852bba8ab23c36d5410e1a5582b924f2d32ae83' 
  AND token = 'nbNYH5dYKntmgG4H4/Z7FiHm0Y51IymTyKuruK4Ncb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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