Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ad9c53761b2c547b3d6d3fb58b8a52456f9146abd4fc572daa1c6c7fafe89eaf' 
  AND token = '54EyjIJ7c6a1cf8CSINZcoOgtND469yUrBolUGCL9PU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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