Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '023ee692feb0fee24722079fa560ae64641de3d9a756a4ca623753f4ea3936e8' 
  AND token = '5uUT0aDfUu3k/KjOvNyzF+ZUnOmdF+ARx3pq9EydDrY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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