Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bb67e4fa4aaecf334d45480670a085afa84ec09461935f95b3bc86971094d69' 
  AND token = '2xe49NGuQyqHSV7FgjssUs4eb0TJNwrrWAoUTjYr9d0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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