Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'be9ce7ed7853f957abf93ef39e222a25445fa8ee6e6e4505a05cf37954b0964d' 
  AND token = 'koBRnVqMllafmqrNODNJm0dLugjCvKNvQNZZ7qq7rew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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