Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6cfa147048320d4305bb60ee6c8f85cbaa8e10e26e8f832e5a1e437876c8c7d7' 
  AND token = 'k+gd2npQsiJ/O+vHvH/MfwIS8eTesxuFTU5tpBi+Qy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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