Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '918be22d1fdb22408cbff9c1a5901cbf1a60465acdefbb180bf330f5b5f30daf' 
  AND token = '2ucSmlV9xHHXfq/6ik3SfO/mZho8zoNoWeaoVvK39+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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