Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63c9db560f95b437304f365b661f464710d580aa115ac68bb99dbc97f722517b' 
  AND token = '9Tes4ZZMzTcX4dXylsYdFB451x/yZK/Jzw37faA3IIA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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