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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8479163cc2b21883a163aab1133c74609dbd48933b2420ce5e90dc95ef943834' 
  AND token = '4shcSOueRm+yCbHy+8PIvb/ToP1HbyByB/DwKKYF5sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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