Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2b4246d5b4b59f824e6e4411488be70fec51a96308bba0fb21fcc11ea022e4b9' 
  AND token = 'eYlQfUJ3b/5vq9KTh3erUAgdwVQ6HrbydqyicZZbaY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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