Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0fc3612a2f35c9f01bce1398e064a567d7eb49591e7366f56daca92901e8056f' 
  AND token = 'IbghmWNP9zXnfVqzFlWbf8y0uJX4ZKA5oRwITIokewU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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