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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e298ce5213f0eb72f0b5931bc659bf63c1d9caccb7aa28909638227a32e92ca' 
  AND token = 'EZXC+RIB0U/KNG0nQc2RKihThf4N04a59sbNIekmYCI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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