Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c8e552a6a28a375c72b35905142ddc77a84287886bab549ca3cfea96e48953a0' 
  AND token = 'VhcJ1dXomrardPjrWFbaiuXcWr4i0nMEf3IaIMeu1ZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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