Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'df5ef47f9d5ad2e11378fecfe45f8ab98200f5fefcf69b0b95f5b6294d3dae1e' 
  AND token = '1JH10gplrZjsD25Douo+I/Oq0qnf6z96sbGAKFzd/rM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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