Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c17ea281bc1f19b3e084f1245b0ef42eaf28ba757fb953811431aa716035c5df' 
  AND token = 'tAp8cNb/XATDQ6j37sFTE0W+xQLb3lIYDdJXNJwsQtM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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