SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '114c09553a7f0b34c907f7b7e88b888805809988eb3c751dc52ca0a947f25d76' 
  AND token = 'YNxBjyhX7oBMa2OOnKvpU/Num13o1pJczzw2dvQCOVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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