Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1071f4af8a41ee8cb586fb218a11e791d2b7e0c591ae4968209ede9d0f878e3b' 
  AND token = 'hIW+q9YSlmfmXzojxqQiJ4+C7JuaKc0RMVNf3Oi7lsA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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