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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '089e8fb505e1dca7bc165745b67b809b133901bd98b2757c5027041e6e090fde' 
  AND token = 'Lyi62zjTB7Abvvf0anBorCz3QPskvDpF/4UIcSIxMqM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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