Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39932be19184833b39317268372c85481b82013a1e4e86ddbb06c6894c85b2d1' 
  AND token = 'EhABIo1r+hkQ3d3s3H0Av1/zMDOP7mzj3mq1voHGg/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}