Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c0b9e1cb79d27d4a0e9ac4f74283e19e66e31f99b193cd99168b81b1e542be1' 
  AND token = 'L5+s2aJIYHfgQkayqe+vCUbV+oRceo8hlV6mvKEDB/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00125

JSON explain

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