Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2719c8ddf7909f242b9a952e2933db15bd70c394b49de6fe8aa0f3cd65770dc2' 
  AND token = 'cqqo1DAutHFkt+Sn6G+NZDaVPpTrTWHAJfhk7PfdoBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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