Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f5eae6c7a4ab2ccf7baef8a8135122c6c0afae56b7743077f8051027015af9b4' 
  AND token = 'rzjThNP6yQh1YSvG0ltEndiDqNmlb978aYzoYQ/SY18=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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