Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9d911c533364d951fd6910b21e5df4ebca8ab23e6ecee8c81b1cf89d3df43f9' 
  AND token = 'ImoLHFIS8KnHHt34xH0fY7FSedAImM9c7IwpO6bDfNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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