Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49c0aeb02e3d710280fae806a85c75c0c723adc0e760bf4d4feddcb36d2d9c82' 
  AND token = 'twCIpU8phbVueII22HVxAK6gaSLEK2Jlm3x3H5JBswA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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