Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee82900ad0f3a1efc868d232fd6746b5663947709a7f16ac10fd81187375b1b8' 
  AND token = 'FofAwR1lMbrWR7XpUYpC0n14KLuZnFsI+ergLhihP9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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