Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'be226a6b458c91d09c24a6a19f113682c0f1b6453baa8fbdf15e0b0780685a87' 
  AND token = 'd792puOhnmuR+uUeF2Yhx7UoetvmUeucNqUUiMxYh2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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