Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c4f8946ab569bcf4b023bbb743862d7b67697ae96e453516debb3e8e0ffff8c' 
  AND token = '54o38+5Cn8WY7/WmAp6vSULAozwBmUw2MWPB16Rxlog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}