Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0c0f9d548aa1f59fdc714e0697516568d94df0632c67091ec951851f35bf250b' 
  AND token = 'N4QnsgdzKGP0Mc6btmNkgaCBeIwRlgKdG1dE9N+hN2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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