Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28eddce99794532db6b4d49de2e0220095d516762cdc89fb99394d45d5c41585' 
  AND token = 'jtesV+aahv6NzZbVIUyRPij2/Z8bNoRMBRmxRwETY44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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