Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32f53b6b41c6967ab3d02bdb709742f6b7c5a0194d1538ba1e06f4b3276ab161' 
  AND token = 'q5lyfVVtmx0zeXbeUroUQ2R61ZCXwlVSmKqmtwUZbLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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