Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce227737c1c8cdee5d1745149045597a01992ca5a03cb1ae96315d12479a824e' 
  AND token = 'BUwFJaVc+1DIxHiRRmkIp97t8JIvgWjWhkaLSAlIwlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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