Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f6e17cd7260a1048574b7fabd6337e3ff2c81dac7c32363adbe47b2db6324db' 
  AND token = '/kkb1XJPuUjlK4+KMYXFFG+72KEBtIGjCBAKaga8KYM=' 
  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"
    }
  }
}