SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6180ec6db8fd6c19a625b25b3d971fa582a8afb8b0a8ba42224a46167fed3542' 
  AND token = 'jYASSY4bThMRYpz+E7DcZBmVBpDU1wXPjLGatlnAR/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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