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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c70e707fcf1155396e8c5914b6d3684168cd7b837331d7c81e9c8917d37d22c7' 
  AND token = 'IWWzqlHRbAXmVV/q+q8WnGdDJXlYBzS+lDbeNT+drxs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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