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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41a60bd60984c1d418622b35d04f110d018f4f5b5337a56a21783d7424bbae56' 
  AND token = 'PYn/Xu2RNvcwC2VcjbuitFWuSR/tEHM+TwEeqh1Q7dY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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