Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e067ea4738b889d187b773a8a2c11824f3bcaa3a7c501d818a170c1073bdc859' 
  AND token = 'xn7S3IzoArhOwvxljqs1bRati77Fdr8ZhPxk/reOnZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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