Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '824aaffa0b0655256ffcc0c151fd2f7833a812e180b3d38f88a0dff2d561333a' 
  AND token = 'janbIN7MHiN3J+/y6jn9CuL3nM82iusWFOmHlGkunmQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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