Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3fd091b0c328d731ae20c68accf774e1aa36ea368c1e1bd8ecd0d38f627f777' 
  AND token = 'wCBf3gKzkzro0TTg8F90ymODmCHUWSOWmyRdH3hWN84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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