Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7779f9987d96de753fc2c06f4214ee1bffedfe3d2970e1978b164de7f3e54c4e' 
  AND token = 'ipX31wrknYkaMXFkPw9cqxgE5kxre4punnWqmf0f/Qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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