Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '418eaca77ce61dedd33ba04b0fd9075e5418b8f1d16343d65155ebeced969aa5' 
  AND token = 'd2iAQszCPhBRUE4qKxYZ2kbZ6rLZIA/IP6U49AqShLU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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