Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6c177c224534fa3380f072bedb9535add6b297bbbca085f15de20f43bbb1fa2f' 
  AND token = 'djKWM1Y3bzy+yVNqjU7+5BHw5CKiVNBJrftNSPnrCt8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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