Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00854d949af583ee31cb2c148adef35f8aa22bb70dfa1c4f9c855b2b538d0e01' 
  AND token = '1BEd/ZjV2MXynyHACBTXBUaozbx6nMdneUOig64469o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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