Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6c6c188f75a92be53d2b857cf630f327ea75c7e8c663e6ba406e757cc90adcb7' 
  AND token = 'TkLdcHGiRqXh4KsIjz40fR/Pe5r7DGHIudNr+58QROk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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