Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a12f1d24ed23bb593ac2217d7f55ab672df2b08ca18ff562052e8bb7d19dc3e5' 
  AND token = 'cYoul8qJuALozHnFu0qXuaBnDKwQ58XwqceNftoU3k4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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