Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6296413b99f4b5209d2c87b85d96203620ca8c9b429ab971dca196816e465c33' 
  AND token = '7OX55WS2uLeYH8BWGg50ZOwBdZfn43vgnG4Zd8C24Is=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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