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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '083e48ae09e6a8917085afb0e5096860b6a53fe7b8d699c0ff0ae26228dc99a0' 
  AND token = 'fYlIPC4YHdWi99iwqTFHav7vUX07Yky3IdXkzQda2mw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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