Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '790b6dd274c479226ad70105933fcb6de9f23cda8ada361ed49bc766cc8d98d9' 
  AND token = 'ZapKNaEUF2kkAjYO4W6mzsGb5bFJV7kyiJwwYmXTA0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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