Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd1fb082ca7894c3355bd95fe2153e35a93b7fdf9714f85b6087a1ef32f74056' 
  AND token = 'YyL5H7MLmJBydntqq7cpdrNXXqsXTuLNKuT2IJdLJO4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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