Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be337593e23c678657350e21187f2c1d0dcce6a427695c5e98e68e64df8885e6' 
  AND token = 'OTdRuQs2ExO7tuYn5EpLD0NQBUwaFiXxHKwjychqjuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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