Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cafba52ba4c1a4b64b72b8d6abb230652e24f6164699770ae6a47d9287f7d34d' 
  AND token = 'Z8RxcA10uJghgisihPeGitiscOUW3eMvFxcxF2c+HeQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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