Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '949cbc15425b8a8c31c148acdc5ecd2d018c2d4ce987434b6974011a798547ce' 
  AND token = 'Dq9VC+vdMcJ8NRYNr18VTFx0J5YryrcUvg9F8wV61eQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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