Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e6ab6a3480b10b963e677a263cac66e930a0121d8594a85434300f9104cf75a' 
  AND token = 'qWFCTONbdcPJxYCDPPxEOW7Yx/2dEioOqLD2Orj+MVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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