Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd64727dccda5a0506fe3d33e32207e75ce51e7497057e3c3f7c43e2cbb9f8cec' 
  AND token = 'ZxN/Zpy40AraOHJfqWFECZrP6Rit0l8rSqy/G82snwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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