Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4e5ee03f98be5ef8658673e228547fa06a182a4517845af15dab057ebb77de1' 
  AND token = 'ki5TqZgI9X02+oR5r29copLJ2mIuxYSSjn1Gr9gkIJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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