Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f8c33e2870de8c4dff6538648867fc76b03d6da46b24386a62b91579b2303498' 
  AND token = 'ZTX/c1buh8U9xVVlXEL8aDduM1/HerAp4lw+3rr+ngk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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