Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42d8d02163b6e2e6db17133bccea79c048ad7906648a9dccf2a26fcc4f0580d4' 
  AND token = 'R7t99BHJ4l6esfvf1Gjrnmr/1WWV4J6a9XWeW402r5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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