Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27dfd2db8f3e566c4ce795c35c62c8d64b530cb1d2a5122e191fe67bfd3d5888' 
  AND token = 'qEjNNNC6T6k0qChHNR5KV0/xgaDD8Qfbpwbt3bN8H9s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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