Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c95a54c5a00e637d185c0f90d7ae0a9e9b834e740441fb5531c82bc13072e64a' 
  AND token = 'qu8CqT7XcoJG1h7ofrIIeQ6CtfoTwgPyD0eAKMn4RHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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