Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5715fb0186eff46fc33813ba1821bbbdb8ca33e633c54879e71ea6dc9626d8e2' 
  AND token = 'femZ8jV/nFIfVZDfvyibxOT7x6eg4fhhy5PncdFj3+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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