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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7bcd5759c3563b6d84de02b6ebaee35ded82acc88eb84dfdcb08890bb4987eb3' 
  AND token = 'WVlNghuaNwH4BL6q6r1s+pEp8KXOWNKfAuVnJmJbyE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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