Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bedda11e50f32a468f4c67a5b52aab6cd72980509d0669d9a92dbd9147030608' 
  AND token = 'HwJdaMpwm1MZ5DCHHVrLfeLBFic3eGwiJ28FulCjoCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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