Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '373ca5131765f7f495c38b280bf615431586276c3933a7cf515102e62732ea34' 
  AND token = 'kE6lCURGrTnmNjraW6FNGokRzIU9OToFi8S+7ZCG6L0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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