Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7aa5184fafd7241c10bd478c50eabb2969eb0bf492178199a8611d81ccec8dd' 
  AND token = 'ILFsQV5vACg3/odN06HxiHCdxYZL4OV1IQbK1dO+k4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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