Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5231f063956a0094e7610fa4c0d3819c9b37707c7b2db93d8d3746a1b3ecb20d' 
  AND token = 'r8+qX/U60CW8eNg/S1W3J0TFBtw171/FByQFi0EyGIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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