Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f34c7b4909756d6587b1ada1584286e20c8b21b39e6bb381ec477b89735077a1' 
  AND token = '369tpPl7mWCEyErmKB35am37qPsLxAzNPV4h26V3TVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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