Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b94fc8b41f77e7c19f685c8a6889f0267f13bc6bc0fedefc8b84cb96a9124666' 
  AND token = 'Fp+js9dEIPX6N4RR35dHBLU/cH8d6TquUgqymTb1w7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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